Questi sono gli occhialini:
Immagine:
17,75 KB
Poi, dal sito
http://www.mods.org/IMAX/experience.htm si deduce che, in effetti vi sono due pellicole differenti che scorrono in una macchina singola (?) con obbiettivi gemelli polarizzati.
L'alternanza tra occhio destro e sinistro avviene 96 volte al secondo. Gli occhialini sono in sincrono col proiettore e posseggono anch'essi un otturatore a cristalli liquidi... [:136]
Per chi magari mastica meglio l'inglese di me, ecco qua:
<hr noshade size="1">The IMAX 3D projector uses Rolling Loop technology to run two separate rolls of film simultaneously past twin projection lenses. To enable the 3D effect, the lenses are carefully aligned to project both left and right eye views onto the giant screen. To see images in 3D, the audience wears either polarized glasses or a headset that includes electronic liquid-crystal shutter (E3D) glasses. While they have different technologies, both types of 3D glasses work with the IMAX 3D projector to provide stunning 3D images. Blockbuster IMAX Theater audiences wear E3D glasses. Two sets of shutters within the 3D projector switch back and forth at 96 times per second, to project alternate left and right eye images on the screen. During the presentation, E3D glasses sense a signal from the projector. In response to this signal, the left and right eye shutters in the glasses alternately open and close in conjunction with the projector shutters to make sure each eye sees the appropriate image, ultimately creating the 3D effect.<hr noshade size="1">
Giovanni - Multisala Lumière
